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Cruizer- XMT 304 Problem

02-23-2013, 04:22 PM

i've had this baby for a few days and all i do is dream about it. my pal over in the weldingweb.com said 'cruizer could input

any help greatly appreciated in finding the values for these little crispy critters! I beleive ive found the black resistor labeled R7 to be 200 ohm 20 watt. Plzzz, any ideas, info or values on the piece the red arrow is pointing at? He's labeled C6 . He got a little melted touching against blown R7

Arrow is pointing at a cap ( blackened but likely still ok), the resistor itself is a 200 ohm 25 watt. Now in order for this to blow, that SR1 it was sitting on is roasted. So it took a major surge. I'd suggest you check the auxillary transformer. The round thing up and at the back of the machine. Also check the output board (right side vertical board) also houses the IGBT's

Comment

Hay Bella, I've got a dilema with another 304, unit has 52vdc Ocv, Everything tests fine, swapped out pc3 with my test board, pc1 is new, igbt's are new as well as, SR1. Unplugged the hall to no effect, Caps are charging to 288 Vdc (208 line)

Comment

It's one of my toys, I'll get back later as I have to fix customer machines...

Cruiser,

Be sure output diodes are really OK. And you may have to flip it upside down and take the bottom off to get a good visual on the condition of the HF transformer. I have had one instance that the HF transformer was shorted winding-to-winding and caused the voltage value to be off.